194), as
in the Maple and Currant. If rolled, it may be so either from the tip
downwards, as in Ferns and the Sundew (Fig. 197), when in unrolling it
resembles the head of a crosier, and is said to be _Circinate_; or it
may be rolled up parallel with the axis, either from one edge into a
coil, when it is _Convolute_ (Fig. 195), as in the Apricot and Plum; or
rolled from both edges towards the midrib,--sometimes inwards, when it
is _Involute_ (Fig. 198), as in the Violet and Water-Lily; sometimes
outwards, when it is _Revolute_ (Fig. 196), in the Rosemary and Azalea.
The figures are diagrams, representing sections through the leaf, in the
way they were represented by Linnaeus.

[Illustration: Fig. 193. 194. 195. 196. 197. 198.]

Section VIII. FLOWERS.

196. Flowers are for the production of seed (16). Stems and branches,
which for a time put forth leaves for vegetation, may at length put
forth flowers for reproduction.

Sec. 1. POSITION AND ARRANGEMENT OF FLOWERS, OR INFLORESCENCE.

197. Flower-buds appear just where leaf-buds appear; that is, they are
either _terminal_ or _axillary_ (47-49). Morphologically, flowers answer
to shoots or branches, and their parts to leaves.

198. In the same species the flowers are usually from axillary buds
only, or from terminal buds only; but in some they are both axillary and
terminal.

199. =Inflorescence=, which is the name used by Linnaeus to signify mode
of flower-arrangement, is accordingly of three classes: namely,
_Indeterminate_, when the flowers are in the axils of leaves, that is,
are from axillary buds; _Determinate_, when they are from terminal buds,
and so _terminate_ a stem or branch; and _Mixed_, when these two are
combined.

200. =Indeterminate Inflorescence= (likewise, and for the same reason,
called _indefinite inflorescence_) is so named because, as the flowers
all come from axillary buds, the terminal bud may keep on growing and
prolong the stem indefinitely. This is so in Moneywort (Fig. 199).

[Illustration: Fig. 199. Piece of a flowering-stem of Moneywort
(Lysimachia nummularia,) with single flowers successively produced in
the axils of the leaves, from below upwards, as the stem grows on.]

201. When flowers thus arise singly from the axils of ordinary leaves,
they are _axillary_ and _solitary_, not collected into flower-clusters.

202. But when several or many flowers are produced near each other, the
accompanying leaves are apt to be o